# Rui

### Pfizer Research Labs

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**Feeds**

Question

How to wrap live editor output

Hello everyone, I have been using live editor to perform symbolic calculation. It is nice that output is given in LaTex forma...

7 years ago | 1 answer | 1

### 1

answerQuestion

How to use symbolic toolbox to remove a redundant variable from the equation?

Dear all, I have two equations y1 = F1(x,a,b) and y2 = F2(x,m,n), where x is an independent variable, while a, b, m and n are...

7 years ago | 1 answer | 0

### 1

answerQuestion

How to code a pulse function in differential equations

Hello everyone, could you help me with my problem described below? assuming I have a simple model dX/dt = -k*X/V, where X...

8 years ago | 1 answer | 1

### 1

answerQuestion

How to avoid negative intermediate guess in nlmefit

Hello everyone, when I use nlmefit, it always comes up with some negative guess after a few iterations, these negative values...

10 years ago | 1 answer | 0

### 1

answerQuestion

passing multiple group parameters to nlmefitsa

Dear all, I find that I cannot pass multiple group parameters to nlmefitsa (MATLAB 2014a). Only the first parameter is passed...

10 years ago | 0 answers | 0

### 0

answersQuestion

customized nonlinear mixed effect model

Hi there, I am trying to do a relatively simple nonlinear mixed effect fit: the fitted parameter is allowed float according t...

10 years ago | 0 answers | 0

### 0

answersQuestion

MATLAB font size, icon and everything get very small on laptop with high resolution

I am using a win8 laptop with screen resolution at 3200 X 1800 (windows recommended resolution). Unfortunately, font size, app i...

10 years ago | 1 answer | 0

### 1

answerForce install Matlab 2013a 32bit in Windows8 64bit

Hi, have you ever tried that? Does it work? Thanks!

11 years ago | 0

Parallel computing with ODEs

I doubt parallel computing with dual core will help. But you still have two options, first, see if your company or school has a ...

11 years ago | 0

Question

cannot open local matlabpool

Hi everyone, I cannot open matlabpool local. The error message is Error using parallel.internal.pool.InteractiveCli...

11 years ago | 4 answers | 0

### 4

answersQuestion

with pdepe, how to solve coupled ode-pde with ode citing pde's BC

Hi everyone, I have coupled pde-ode equations, where pde's one boundary condition is ode's input parameter. I want to write ...

11 years ago | 0 answers | 0

### 0

answersQuestion

Does an AMD 4-core processor runs better than an Intel dual core processor for parallel computing

Hi everyone, My basic idea is that AMD A10/A8 processor gets 4 cores, while Intel i5 has only two cores. In other words, with...

11 years ago | 2 answers | 0

### 2

answersQuestion

semilogy tick marker is missing

Hi everyone, Markers at Y lower limits are missing. How can I fix that? Thanks! Rui <<http://s24.postimg.org/u4tf...

11 years ago | 1 answer | 0

### 1

answerQuestion

A chi square test on truncated normal distribution? Result interpretation

Hi everyone, I have some data which looks to be a truncated normal distribution. So I want to do a chi square test to see if ...

11 years ago | 0 answers | 0

### 0

answersQuestion

How to calculate confidence interval of parameter estimated by global optimization--pattern search

Hi everyone, I recently used pattern search to find the global minimal. Though the algorithm worked very well to find me a so...

11 years ago | 2 answers | 0

### 2

answersQuestion

fopen and fprintf do not work within parfor or smpd running on grid

Hello everyone, I met a problem to use fopen and fprintf within parfor or smpd when I run my codes on grid. Here are my codes...

11 years ago | 3 answers | 0

### 3

answersQuestion

Corrcoef and R^2 definition give different R^2 values

Hi everyone, I am trying to calculate R^2 value for my data and simulation. I used two different ways. First one, ...

12 years ago | 2 answers | 0